Claims
- 1. A razor head having at least one blade and an anti-friction element arranged near the at least one blade, said anti-friction element comprising:
an upper layer containing water-soluble agents; and a sole of the same composition as said razor head; wherein:
said anti-friction element is fixed to said razor head by welding of said sole to said razor head; and said upper layer is attached to said sole by one of molding, coextrusion, overmolding, or twin-shot injection molding.
- 2. The razor head as claimed in claim 1, wherein said sole contains at least one polymer capable of being fixed to said razor head by welding, said polymer being selected from the group consisting of: polyethers, polyphenylene-ether, styrene resins, polystyrene, ABS, polyolefin resins, polypropylene, polyethylene, acrylic resins, vinyl resins, plasticized polyvinyl dichloride, non-plasticized polyvinyl chloride, and blends thereof.
- 3. The razor head according to claim 1, wherein said upper layer is intended to come into contact with the skin during shaving and contains a blend of (a) insoluble polymers selected from the group consisting of: polyethers styrene resins, polystyrene, ABS, polyolefin resins, polypropylene, polyethylene, acrylic resins, PMMA, vinyl resins, plasticized and non-plasticized polyvinyl chloride, and blends thereof; and (b) soluble polymers selected from the group consisting of: polyoxyethylenes, polyacrylamides, polysaccharides, and blends thereof.
- 4. The razor head of claim 1, wherein said sole is fixed to said razor head by ultrasonic welding.
- 5. The razor head of claim 1, wherein said sole has a thickness of from 0.05 mm to 0.6 mm.
- 6. The razor head of claim 5, wherein said sole has a thickness of from 0.05 mm to 0.4 mm.
- 7. The razor head of claim 6, wherein said sole has a thickness of about 0.3 mm.
- 8. The razor head of claim 1, wherein said upper layer has a thickness of from 0.1 mm to 1.5 mm.
- 9. The razor head of claim 8, wherein said upper layer has a thickness of from 0.3 mm to 1 mm.
- 10. The razor head of claim 1, wherein;
said anti-friction element has a layer of a blend containing from 20% to 60% of an insoluble thermoplastic polymer, and from 20% to 80% of polyoxyethylene with a molecular mass of between 100,000 and 6,000,000; said layer is coextruded with a layer of polystyrene constituting said sole; and said sole is ultrasonically welded to said razor head.
- 11. The razor head as claimed in claim 10, wherein said anti-friction element also contains from 1% to 20% of polyoxyethylene with a molecular mass of below 30,000.
- 12. The razor head of claim 1, further comprising a polymer interface between said sole and said upper layer.
- 13. A method for setting an anti-friction element onto a razor head having at least one blade, said method comprising:
securing a layer containing water-soluble agents to a sole of the same composition as the razor head and containing one or more insoluble polymers by molding, coextrusion, overmolding, or twin-shot injection molding to form an anti-friction element; and welding the sole of the anti-friction element to a razor head near the at least one blade of the razor head.
- 14. The method of claim 13, wherein the anti-friction element is ultrasonically welded to the razor head.
- 15. The method of claim 13, further comprising inserting a blend of polymers between said upper layer and said sole as an interface.
- 16. A razor head having at least one blade and an anti-friction element secured to the razor head near the at least one blade, said anti-friction element comprising:
a sole formed of a first material of the same nature as said razor head; and an upper layer secured to said sole and formed of a second material different from, yet compatible with, said first material.
- 17. The razor head of claim 16, wherein said upper layer and said sole are secured together by one of molding, coextrusion, overmolding, or twin-shot injection molding.
- 18. The razor head of claim 16, wherein said second material contains a water-soluble polymer and a water-insoluble polymer.
- 19. The razor head of claim 16, wherein said sole is welded to said razor head.
- 20. A razor head having at least one blade and an anti-friction element arranged near the at least one blade, said anti-friction element comprising:
an upper layer containing water-soluble agents; and a sole containing at least one water insoluble polymer; wherein:
said anti-friction element is fixed to said razor head by welding of said sole to said razor head; and said upper layer is attached to said sole by one of molding, coextrusion, overmolding, or twin-shot injection molding.
Priority Claims (1)
Number |
Date |
Country |
Kind |
99 06084 |
May 1999 |
FR |
|
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of PCT Application No. PCT/FR00/01243, filed May 9, 2000.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/FR00/01243 |
May 2000 |
US |
Child |
09987000 |
Nov 2001 |
US |